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Preparation and Characterization of 2-Phenoxyethyl(thiophen-2-yl)tellane (C4

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Preparation and Characterization of

2-Phenoxyethyl(thiophen-2-yl)tellane (C

4

H

3

S)TeCH

2

CH

2

OC

6

H

5

Ludmila Vigo, Raija Oilunkaniemi, and Risto S. Laitinen

Department of Chemistry, P. O. Box 3000, FIN-90014 University of Oulu, Finland Reprint requests to Prof. Risto Laitinen. E-mail: Risto.Laitinen@oulu.fi

Z. Naturforsch. 61b, 61 – 64 (2006); received August 30, 2005

The synthesis and structure of (C4H3S)TeCH2CH2OC6H5 (1) (C4H3S = thiophen-2-yl) are re- ported and compared to those of the analogous selenium compound (C4H3S)SeCH2CH2OC6H5pre- viously synthesized by our group. The compound was characterized by1H,13C{1H}-, and125Te- NMR spectroscopy as well as by X-ray single crystal crystallography. 1 crystallizes in the mon- oclinic crystal system, space group P21, with Z=2, and unit cell dimensions a=10.618(2)A,˚ b=5.357(1)A, c˚ =10.684(2)A,˚ β=96.57(3)◦. The lattice is composed of discrete molecules that are joined together by weak hydrogen bonds into a three-dimensional network. The thiophen-2-yl ring is disordered and shows two alternative orientations with the site occupation factors of 0.70(1) and 0.30(1). All bond parameters are quite normal. The comparison of the lattices in 1 and in its selenium anologue shows that while the closest intermolecular contacts are similar, the packing of the molecules is different.

Key words: Telluroether, 2-Phenoxyethyl(thiophen-2-yl)tellane, X-Ray Crystallography, NMR Spectroscopy

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